this is a really fast wool winder: 3-4 times faster than most regular speed models in the market! you can’t find a second one like this if you’re looking for efficiency and fun! wind a ball of up to 10 oz in less than two minutes! sturdy cast iron structure. additional cones available. easy assembly: only tool required is a wrench (not included) cone size: 4.75 inches high/6 inches in diameter at base